There’s no mistaking the dizzying display of a hummingbird’s wings as it zips around from flower to flower looking for nectar. But often, that same frantic action is used to chase other hummingbirds.

At first, I didn't know what I was seeing — a tiny blur at the edge of a bush in Seattle's Wedgwood neighborhood, from which emitted a dramatic, high-pitched scream. Then the scene became clear: Two ...

When Jay Falk and Scott Taylor first saw the white-necked Jacobin hummingbird chick in Panama’s dense rainforest, the bird biologists didn’t know what they were looking at. The day-old bird, smaller ...